2661040481 has 16 divisors (see below), whose sum is σ = 3156796800. Its totient is φ = 2215284480.

The previous prime is 2661040463. The next prime is 2661040511. The reversal of 2661040481 is 1840401662.

It is a cyclic number.

It is not a de Polignac number, because 2661040481 - 2²² = 2656846177 is a prime.

It is a super-2 number, since 2×2661040481² = 14162272883041422722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2661040441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185381 + ... + 199218.

It is an arithmetic number, because the mean of its divisors is an integer number (197299800).

Almost surely, 2^2661040481 is an apocalyptic number.

It is an amenable number.

2661040481 is a deficient number, since it is larger than the sum of its proper divisors (495756319).

2661040481 is a wasteful number, since it uses less digits than its factorization.

2661040481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384664.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 2661040481 is about 51585.2738773383. The cubic root of 2661040481 is about 1385.7466172168.

The spelling of 2661040481 in words is "two billion, six hundred sixty-one million, forty thousand, four hundred eighty-one".